TRANSMISSION GEAR BOX - GUANGDONG ZHAOQING L & V CO LTD

Title:

TRANSMISSION GEAR BOX

Document Type and Number:

WIPO Patent Application WO/2021/169865

Kind Code:

A1

Abstract:

A transmission gear box, comprising a box body (10), at least one end cover (20, 20') and a fitting structure. A cavity suitable for arranging gears is defined in the box body (10); the at least one end cover (20, 20') is fixed on at least one opening end, which is axially opened, of the cavity of the box body (10); the fitting structure comprises an inner fitting surface (11) provided on the surface of the cavity of one of the box body (10) and the end cover (20, 20'), and an outer fitting surface (21) provided on the peripheral surface of the other one of the box body and the end cover, and the inner fitting surface (11) and the outer fitting surface (21) are fixed to each other by means of welding; at least one clearance fit area (30) and interference fit areas (40) located on both sides of the clearance fit area (30) are configured between the inner fitting surface (11) and the outer fitting surface (21). The provided transmission gear box can effectively avoid product deformation caused due to the fact that a molten body presses the box body (10) and the end cover (20, 20') during welding.

Inventors:

JIANG YUAN (CN)
LI HUOMING (CN)
QIU XIANGHUAI (CN)

Application Number:

PCT/CN2021/077030

Publication Date:

September 02, 2021

Filing Date:

February 20, 2021

Export Citation:

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Assignee:

GUANGDONG ZHAOQING L & V CO LTD (CN)

International Classes:

F16H57/02; B23K26/16; F16H1/32; F16H55/17; F16H57/03; F16H57/08

Foreign References:

CN111207200A	2020-05-29
CN211649001U	2020-10-09
CN103363066A	2013-10-23
CN102470486A	2012-05-23
CN108458090A	2018-08-28
CN110030368A	2019-07-19
CN103732348A	2014-04-16
CN103429377A	2013-12-04
CN102652047A	2012-08-29
CN103119333A	2013-05-22
US20040200569A1	2004-10-14

Other References: